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APPARATUS FOR AND METHOD OF WINDING STATOR COILS Original Filed May 29,1958 H. W. MOQRE Nov. 6, 1962 2 Sheets-Sheet 1 IN VENTOR.

HARRY W. MOORE HIS 4 TTOF/VE VS Nov. 6, 1962 H. w. MOORE Re. 25,

APPARATUS FOR AND METHOD OF WINDING STATOR cons Original Filed May 29-,1958 2 Sheds-Sheet 2 i 16 INVENTOR. 33 H 1B HARRYMLMOORE JIGB BY MWWUnited States Patent ()fiiice Reissued Nov. 6, 1962 25,281 APPARATUS FORAND METHOD OF WINDING STATOR COILS Harry W. Moore, 5051 Kittridge Road,Dayton 24, Ohio Originai No. 2,953,309, dated Sept. 20, 1960, Ser. No.

733,688, May 29, 1958. Application for reissue July 31, 1961, Ser. No.128,642

14 (Claims. (Cl. 242-1.1)

Matter enclosed in heavy brackets appears in the original patent butforms no part of this reissue specification; matter printed in italicsindicates the additions made by reissue.

This invention relates to apparatus for and a method of winding coilsupon inwardly directed pole pieces of a stator, although not necessarilyso limited.

Coils have been wound on inwardly directed pole pieces of stators bycoil winding machines for a long period of time. For example, the patentto Gysel No. 1,431,947 shows such a device. With this device, as far asunderstood, several steps of manual operations are required before andafter winding each pole.

An object of this invention is to provide apparatus for and a method ofWinding coils upon internally directed pole pieces, wherein the entireoperation is automatic. In winding internally directed poles, it isnecessary to pro- 'vide horn-like members or guides for guiding the wireacross the end of the pole piece and for guiding the wire into theproper slots. This has been accomplished by providing horns for guidingthe wires upon the poles,

the two horns for each pole, which might be referred to as a set ofhorns, being separable; mechanism being provided for supporting one pairof horns, one for each pole located on the same side of the stator in astationary position; and withdrawing and reinseiting the two horns onthe opposite side of the stator as a unit. The withdrawal andreinserting of the horns is accomplished by inserting a spacer betweenthe two horns and providing detents or prongs projecting into therecesses in the horns to press the horns against the spacer, thenwithdrawing the horns from the opening in the stator, so as to permitremoval of the stator. When the horns are in position, radially directedlocking means are used in holding the horns in a fixed position withrespect to the pole. When the horns have been inserted into the properposition, the locking means moving radially in slots provided thereforin the horns lock the horns in position so as to release the supportingmeans used in supporting the horns when unloading and reloading astator.

Other objects and advantages reside in the construction of parts, thecombination thereof, the method of manufacture and the mode ofoperation, as will become more apparent from the following description.

In the drawings:

FIGURE 1 is a side elevational view with parts shown in section, takensubstantially on the line 1-1 of FIG- URE 2.

FIGURE 2 is a top plan view of a mechanism used in winding a coil.

FIGURE 3 is an end elevational view of the stator looking in thedirection of the end shown at the top of FIGURE 2.

FIGURE 4 shows a pair of horns normally locked on one side of the statorheld in suspension.

FIGURE 5 shows a stator in phantom mounted upon the pair of horns shownin FIGURE 4.

FIGURE 6 discloses the second pair of horns inserted on the oppositeside of the stator.

FIGURE 7 discloses two pairs of latching members used in holding thehorns in position.

FIGURE 8 discloses a shuttle feeding the wire, which shuttle passesthrough the stator and between the sets of horns.

The apparatus disclosed herein illustrates the steps of carrying out themethod of winding a stator by means of two pairs of horns when a twopole motor is used. If a four pole motor is used, then, of course, twoextra pairs of horns would be required. The apparatus will now bedescribed.

A pair of horizontally arranged frame members 10 and 12 provide a mainframe for supporting the stator and the horns used in winding coils. Apair of horns 14, these horns being identical, are located on one sideof the stator. A second pair of horns 16 are positioned on the oppositeside of the stator. The horns 14 are each provided with a pair of prongs18 extending parallel to the axis of rotation of an armature, not shown,used in the stator. Each of the horns is provided with a reduced portion14a projecting under the pole piece and having lips 14b integral withthe portion 14a, the lips 14b being seated against the pole tips 20 ofthe two poles 22 diametrically arranged, as clearly seen in FIGURE 1.Each of the horns 16 is provided with a pair of apertures receiving theprongs 18. All of the horns have been provided with radial slots 24,each slot being provided with an inwardly directed flange 26. The twohorns 14 are suspended or held in position when loading a stator bymeans of a pair of vertical pins extending through apertures 32 in thehorns 14. These pins 30 are connected to a bar 34, substantially squarein cross sectional area, used as a spacer for holding the two horns 14in fixed, spaced, parallel relationship when unloading and loading astator. The vertical pins 30 and the spacer bar 34 are mounted upon apiston rod 36 that is movable upwardly into the position shown in FIGURE3 and downwardly out of contact with the pole pieces 14, as will be morefully described later. The two horns 14 remain in the same position bothwhen Winding and when unloading and loading a stator upon the horns.

Two different types of spacers for the horns are pro vided, namely, oneconsisting of the bar 34 and the two pins 30.

The horns 16 are each provided with a recess for receiving a pointedprong or pin 40 used in pushing the horn 16 against a cylindrical spacer42, the spacer 42 being connected to a reciprocatory member 44. The pins40 are mounted upon levers 46 pivoted at 50, the upper ends of thelevers being pivotally connected to links 52 at 54 that are controlledby a piston rod 56. As the piston rod is raised, as viewed in FIGURE 2,the pins 40 are seated in the recesses provided therefor in the horns 16held in spaced relation by the spacer bar 42. The entire assembly isthen withdrawn downwardly, as viewed in FIGURE 2, by retracting member44 mounted between the guides to withdraw the horns 16 and, when a newstator has been loaded, member 44 is raised upwardly, as viewed inFIGURE 2, to position the horns 16 on the side opposite the stator 70.When the stator has been inserted into winding position, a pair ofclamping members 68 locks the stator in position.

After the horns have been inserted, it is necessary to lock the horns inposition before retracting the pins 30 and releasing the pins 40 fromthe horns. Pairs of latch members 72, each consisting of a pair offurcations 72a move in from opposite directions, as best illustrated inFIGURES 1 and 2, the furcations 72a each being provided with a notchinto which the flanges 26 are seated. The latch members 72 are pivotedat 74 to a pair of links 76 extending through a housing 73 and fixedlyattached to a piston rod 89. The piston rod 31 is hollow and has mountedtherein a plunger 32. The plunger 82 pushes against the heels 72b of thelatch members to hold the latch members 72 firmly against the flanges 26in each of the horns. The latch members 72 are urged out of engagementwith the flanges by suitable springs that have not been shown. Themethod of winding the stator poles beginning with the horns shown inFIGURE 4 consists of the following steps or operations.

While the two horns 16 are held in association with the frame members Itand 12, which have not been shown in FTGURES 4, 5, 6, 7 and S for thepurpose of clearness, the stator 76 is inserted and locked in positionby the clamps 68. The stator is shown in phantom in FIGURE 5. After thestator has been inserted, the reciprocatory member 44 supporting the twohorns 16, is then advanced into the position shown in FIGURE 7, placingthe horns 16 upon the prongs 18. This is followed by advancing the twopiston rods 8% towards the stator, so as to advance the collapsed latchmembers 72 into the slots 24, this being followed by advancing theplunger 82 against the heels 72b to move the latch members into theposition shown in FIGURE 1, the piston rods 8t) being held in positionand the plunger 82 likewise being held in position, so as to lock thehorns with respect to the stator.

When this has been done, the supporting mechanism for the two pairs ofhorns 14 and 16 is removed. These may be removed simultaneously, in thatthe horns are now firmly locked into position upon the latch members 72and in association with the stator. The supporting mechanism for thehorns 14 is lowered by retracting the piston rod 36, shown in FIGURE 3,and the supporting mechanism for the horns 16 is withdrawn axially byfirst withdrawing the piston rod or connecting rod 56 downwardly, asshown in FIGURE 2, so as to release the prongs 40 from the apertures orrecesses in the horns 16. This is followed by withdrawing member 44supporting the levers 46 and the spacer 42, so as to withdraw thisentire assembly from the horns, which is followed by winding the coils.

This is accomplished by means of a shuttle mounted both forreciprocatory and oscillatory movements. This shuttle includes a hollowtube 100 having a pair of wires 110 fed from a suitable source of supplythrough the center of the tube and outwardly. The shuttle isreciprocated through the stator and oscillated beyond the horns inseriatim, both the reciprocatory movements and the oscillatory movementsreversing directions alternately during each cycle of the shuttle, tothereby wind the windings on the poles. That is, the shuttle is passedbetween the two sets of horns. When the shuttle has passed through thestator and between both sets of horns, the shuttle is rotated throughapproximately 180, then the shuttle is retracted from the stator, thisbeing followed by rotation of the shuttle in the reverse directionthrough 180 to complete the Winding of one turn on the poles. Theforegoing cycle of the shuttle is repeated to continue winding thesecond turn on the poles. In each cycle of the shuttle, one wire iswound upon one pole piece and the other wire is wound upon the otherpole piece. This is continued until the desired number of turns in eachcoil has been provided, when the operation of the shuttle isinterrupted.

When this takes place, the pins 30 and the spacer bar 34 are raised, soas to again hold the two horns 14. The mechanism, including the pins 43,the lever 46 and the spacer bar 42, is then advanced into the positionshown in FIGURE 2 to firmly grip the horns 16. The latch members 72surrounding the ends of the pole coils are then withdrawn radialiy, soas to release the horns 14 and 16 from the stator. The horns 16 are thenwithdrawn and the stator unlocked by releasing the clamps 63. The statormay then be removed and a new stator inserted into position. Theoperation may then be repeated.

Although the preferred embodiment of the device has been described, itwill be understood that within the purview of this invention variouschanges may be made in the form, details, proportion and arrangement ofparts, the combination thereof and mode of operation, which generallystated consist in a device capable of carrying out the objects setforth, as disclosed and defined in the appended claims.

Having thus described my invention, I claim:

1. The method of winding inwardly directed poles on a stator utilizingtwo pairs of horns, one pair being located on one side of the stator andthe other pair being located on the other side of the stator, [temporarysupports for one pair of horns] and a wire feeding shuttle having wirefeeding projections, said method including the steps of [fixedlysupporting one pair of horns, inserting] supporting the stator [upon]between said [pair] pairs of [fixed] horns, [moving a second pair ofhorns into engagement with the stator,] one horn of each paircooperating to provide guides for the winding of a pole, holding the twopairs of horns in fixed relation with respect to the stator, [removingthe temporary supports of said one pair of horns,] and advancing theshuttle through the stator through reciprocatory movements and throughoscillatory movements in seriatim, both movements reversing directionsalternately during each cycle of the shuttle to thereby wind thewindings on the poles.

2. The method of winding inwardly directed stator poles utilizing twopairs of horns, one pair being located on one side of the stator and theother pair being located on the other side of the stator, and a wirefeeding shuttle having wire feeding projections, said method includingthe steps of [fixedly supporting one pair of horns, inserting]supporting the stator [upon] between said [pair] pairs of [fixed] horns,[moving a second pair of horns into engagement with the stator] one hornof each pair cooperating to provide guides for winding a pole, lockingthe two pairs of horns in fixed relation with respect to the statorpoles, and advancing the shuttle through the stator throughreciprocatory movements and through oscillatory movements in seriatim,both movements reversing directions alternately during each cycle of theshuttle to thereby wind the windings on the poles.

3. The method of winding inwardly directed stator poles utilizing twopairs of horns, one pair being located on one side of the stator and theother pair being located on the other side of the stator, movablymounted latching means adapted to engage and lock the horns, saidlatching means extending radia'lly when in use, and a wire feedingshuttle having wire feeding projections, said method including the stepsof [fixedly supporting one pair of horns, inserting] supporting thestator [upon] between said [pair] pairs of [fixed] horns, [moving asecond pair of horns into engagement with the stator,] one horn of eachpair cooperating to provide guides for winding a pole, advancing thelatching means inwardly into engagement with the horns for holding thehorns against the poles, and advancing the shuttle through the statorthrough reciprocatory movements and through oscillatory movements inseriatim, both movements reversing directions alternately during eachcycle of the shuttle to thereby wind the windings on the poles, whichwindings temporarily enclose the latching means.

4. The method of winding inwardly directed stator poles utilizing twopairs of horns, one pair being located on one side of the stator and theother pair being located on the other side of the stator, latching meansmovable radially into engagement with the horns when in use, and a wirefeeding shuttle having wire feeding projections, said method includingthe steps of [fixedly supporting one pair of horns, inserting] mountingthe stator [upon] between said [pair] pairs of [fixed] horns, [moving asecond pair of horns into engagement with the stator,] connecting eachhorn of one pair to the corresponding horn of the other pair, one hornof each pair cooperating to provide guides for winding a pole, advancingthe latching means inwardly to engage the horns to hold the horns inposition, and advancing the shuttle through the stator throughreciprocatory movements and through oscillatory movements in seriatim,both movements reversing directions alternately during each cycle of theshuttle to thereby wind the windings on the poles and temporarilyenclose the latching means.

5. The method of winding inwardly directed stator poles according toclaim 4, wherein after the poles have been wound each pair of horns areengaged to support the same, releasing and withdrawing the latchingmeans and withdrawing one pair of horns to release the stator.

6. The method of winding inwardly directed stator poles according toclaim 4, wherein the stator is clamped in position upon being mounted[upon] between said [pair] pairs of Ejfixedjfl horns.

7. A device for winding poles directed inwardly from a stator, saiddevice including a pair of horns, said horns having parallel holestherein, a spacer member positioned between said horns and a pair ofpins for holding said pair of horns in [a] fixed spaced position [topermit insertion of the stator upon said pair of horns], said pinsextending through said holes, a second pair of horns, means forremovably supporting the second pair of horns, means for supporting thestator between said pairs of horns, means carried by one pair of hornsfor interengaging the other pair of horns, means for locking the hornsin fixed position with respect to the poles of the stator, and a shuttlemounted for reciprocatory and oscillatory movements in seriatim andalternately in the reverse directions for winding coils on the poles.

8. A, device for Winding poles directed inwardly from [the] a stator,said device including a pair of horns having parallel holes extendingtherethrough, a pair of par allel pins extending through said holessupporting said pair of horns in [a] fixed spaced position [to permitinsertion of the stator upon said pair of horns], a second pair of hornshaving recesses therein, spacer means mounted between said second pairof horns, pins removably mounted and projecting into said recesses forc'lamping said second pair of horns against the second spacer member,means for supporting the stator between said pairs of horns, means forlocking the horns in fixed position with respect to the poles of thestator so as to permit removal of the pins and the spacer members, and ashuttle mounted for reciprocatory and oscillatory movements in seriatimand alternately in the reverse direction for winding coils on the polepieces.

9. A device for winding poles directed inwardly from the statoraccording to claim 8, wherein means for locking the horns in fixedposition with respect to the poles of the stator includes a plurality oflatch members extending radially inwardly and parallel to the poles.

10. A device for winding poles directed inwardly on the stator accordingto claim 8, wherein the means for locking the horns in fixed positionwith respect to the poles of the stator includes a plurality of pairs ofyokes, the arms of which includes latching means, the yokes beingpivotally mounted and means for biasing the yokes away from engagementwith the horns, and means for actuating the latching means intoengagement with the horns.

11. A device for winding poles directed inwardly on a stator, saiddevice including two pairs of horns, removable means for supporting onepair of horns one one side of the stator to permit insertion of thestator upon said pair of horns, movable means for supporting the otherpair of horns, means carried by one pair of horns for interengaging theother pair of horns, means for mounting the stator between said pairs ofhorns, means for locking the horns in fixed position with respect to thepoles of the stator to release the supporting means for removal fromboth pairs of horns, and a shuttle mounted for reciprocatory andoscillatory movements in seriatim and alternately in reverse directionsfor winding coils on the poles.

12. A device for winding poles directed inwardly on the stator accordingto claim 11, wherein the horns are provided with latch engaging flangesand wherein the means for locking the horns in fixed position withrespect to the poles of the stator includes a pair of means, each ofsaid pair of means including a pair of bifurcated members, the furcationof each member being provided with a latch adapted to engage one flangeof each horn.

13. A device for Winding poles directed inwardly on the stator accordingto claim 11, wherein the means for engaging both pairs of horns areremovable and the horns are supported by the locking means so as to holdthe horns against the poles of the stator when winding the poles.

14. A device for winding poles directed inwardly on the stator accordingto claim 11, wherein the horns of one pair are provided with pinsextending towards the other pair and wherein said other pair of hornsare provided with apertures for receiving the pins to thereby hold thehorns together.

References Cited in the file of this patent

